Vehicle component with an accessory mounting feature and a method and tool for forming

ABSTRACT

A vehicle component, and a method and tool for forming the component are provided. First and second tools with first and second surfaces, respectively, are provided. The first tool is translated along a first axis towards the second tool such that the first and second surfaces cooperate to define a mold cavity configured to form an accessory mount feature with an aperture. The second surface is configured to form an integrated rib extending outwardly from an upper surface of the mount feature to a planar bearing surface surrounding the aperture with the planar bearing surface oriented at an acute angle relative to the upper surface. The first axis is substantially parallel to the upper surface.

TECHNICAL FIELD

Various embodiments relate to a vehicle component with an accessorymounting feature, and a method and tool for forming the vehiclecomponent.

BACKGROUND

Vehicle components may include various mounting features for accessoriesor other secondary vehicle components. An example of such a vehiclecomponent is an intake manifold with a mounting point for a wiringharness. The vehicle component may be formed using a tool assembly ormold, and the tool or mold may be designed with a certain number oftools or slides. The mounting feature may be provided on the vehiclecomponent to locate and position the secondary vehicle component in aprescribed manner. Shape or tool path interferences may lead to themounting feature being unable to be formed by the existing tool whilemaintaining a maximum wall thickness for the component such that anadditional slide would need to be added to the tool, leading to anincrease in complexity and costs related to the tooling.

SUMMARY

In an embodiment, a method of forming a vehicle component is provided.First and second tools are formed with first and second surfaces,respectively. The first tool is translated along a first axis towardsthe second tool such that the first and second surfaces cooperate todefine a mold cavity configured to form an accessory mount feature withan aperture. The second surface is configured to form an integrated ribextending outwardly from an upper surface of the mount feature to aplanar bearing surface surrounding the aperture. The first axis isoriented at an acute angle relative to the planar bearing surface and issubstantially parallel to the upper surface.

In another embodiment, a mold is provided with a first tool configuredto translate along a first axis and defining a first surface, and asecond tool defining a second surface. The first and second surfacesdefine a mold cavity configured to form a mount feature on a vehiclecomponent. The second surface is configured to form a planar bearingsurface surrounding an aperture of the feature, and the first axis isoriented at an acute angle relative to the planar bearing surface.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates a perspective view of a vehicle component accordingto an embodiment;

FIG. 2 illustrates a partial perspective view of the vehicle componentof FIG. 1;

FIG. 3 illustrates a partial sectional view of the vehicle component ofFIG. 1 with an accessory mounted thereto;

FIG. 4 illustrates a flow chart of a method for forming the vehiclecomponent according to an embodiment; and

FIG. 5 illustrates a schematic of a tool assembly or mold for forming avehicle component according to an embodiment.

DETAILED DESCRIPTION

As required, detailed embodiments of the present disclosure are providedherein; however, it is to be understood that the disclosed embodimentsare merely exemplary and may be embodied in various and alternativeforms. The figures are not necessarily to scale; some features may beexaggerated or minimized to show details of particular components.Therefore, specific structural and functional details disclosed hereinare not to be interpreted as limiting, but merely as a representativebasis for teaching one skilled in the art to variously employ thepresent disclosure.

FIGS. 1-3 illustrate a vehicle component 10 according to an embodiment.The vehicle component 10 shown is an intake manifold 12 for an internalcombustion engine or a portion thereof. In other embodiments, thevehicle component 10 may be a battery tray, an engine cam cover, or thelike.

The intake manifold 12 has a first shell portion 14 and a second shellportion 16 that cooperate to form the intake manifold. Each shellportion 14, 16 may be molded from a polymer material, a plasticmaterial, or a composite material, including a fiber or particlereinforced resin, as described in further detail below. The disclosureis not limited to the composite materials and forming processes includedherein, and additional materials and processes may be used according tothe spirit and scope of the disclosure. In one example, each shellportion 14, 16 is formed using an injection molding process in a toolassembly or mold. In other examples, the shell portion(s) 14, 16 may beformed in a blow molding, compression molding, or other process thatinvolves a tool assembly with multiple tool, slide, and/or diecomponents.

The vehicle component 10 provides one or more mounting features 20 foran accessory 22. In one example, the mounting feature 20 is an aperture24 and planar bearing surface 26 for a clip fastener 28. The clipfastener 28 has a post section 30 or post, and a head section 32, orhead. The post section 30 may be inserted into the aperture 24 such thatit extends into the aperture 24, and may additionally be provided withretention features to retain the fastener 28 to the mounting feature 20.The post section 30 may be inserted into the aperture 24 until the headsection 32 is in contact with or abuts the planar bearing surface 26.The bearing surface 26 therefore provide a support surface for the headsection 32 of the fastener 28, and the mounting feature 20 locates andorients the fastener 28 and accessory 22 relative to the vehiclecomponent 10.

The head section 32 of the fastener 28 may be provided with one or moreclamp devices, cable ties, or other features that allow for connectionof the accessory 22 to the fastener. In one example, and as shown, theaccessory 22 is a wiring harness.

In other examples, other fasteners 28 and mounting features 20 may beprovided in various embodiments and according to the present disclosureand may be at least in part based on the vehicle accessory 22 to bemounted.

The planar bearing surface 26 of the mounting feature 20 is required tobe provided at a predetermined location relative to the component 10,and at a predetermined orientation or angle on the component, in orderto locate the fastener 28 and associated accessory 22 relative to thecomponent 10. In one example, the accessory 22 is a wiring harness, andthe planar bearing surface 26 is provided to locate the harness 22 suchthat the harness has clearance relative to the component 10, forexample, as the cable or wires runs alongside the component. In theexample shown, the mounting feature 20 and the clip fastener 28cooperate to position the wire harness 22 such that it extends at adesired angle above the planar bearing surface and longitudinally alongthe shell 14.

The mounting feature 20 may be provided as a mounting box or otherflange or similar extension from the shell 14 of the component 10 toprovide the planar bearing surface 26 at the desired location and angle.

In one example, and as shown, the vehicle component 10 has a body 14that is formed by a shell structure. The body 14 has a mounting feature20 that is integrally formed with the body. The mounting feature 20includes a member 40 such as a plate that extends outwardly from theshell 14. The member plate 40 has a first surface 42, or upper surface.The member also has a second surface 44, or lower surface. The upper andlower surfaces 42, 44 may be opposite to one another and spaced apartfrom one another. The upper and lower surfaces 42, 44 may additionallybe substantially parallel to one another and follow one another asshown. For purposes herein, “substantially” with respect to an angularrelationship refers to a variability of five degrees or less, and mayprovide for tooling draft clearance, and the like.

An aperture 24 extends through the member 40 and intersects the upperand lower surfaces 42, 44. The upper and lower surfaces 42, 44 may eachsurround the aperture 24. The aperture 24 may be provided with variousshapes based on the fastener 28 planned for use with the mountingfeature 20. An integrated rib 50 extends outwardly from the uppersurface 42 to a planar bearing surface 26, with the planar bearingsurface 26 and integrated rib 50 surrounding the aperture 24. The planarbearing surface 26 may be oriented at a nonperpendicular and nonparallelangle relative to the upper and lower surfaces 42, 44. The planarbearing surface 26 may be further oriented at an acute angle A relativeto the upper and lower surfaces 42, 44.

The integrated rib 50 may be provided by a tubular structure. Thetubular rib structure may be further provided with a series oflongitudinal secondary ribs 52 extending outwardly therefrom. Eachsecondary rib 52 may extend from the upper surface 42 to the planarbearing surface 26, and may provide additional structural support forthe integrated rib 50 and planar bearing surface 26, as well asincreasing the overall surface area of the planar bearing surface 26.The series of ribs 52 may include any number of ribs, including one ormore, and the number of ribs 52 may be increased to increase the overallbearing surface area or as needed for stiffness or structural support.

Issues may arise when manufacturing the component 10 based on thelocation and orientation of the mounting flange 20 and desired bearingsurface 26. For example, the component 10 may be formed by a toolassembly as described below, and the tools, dies, and slides may beprovided and configured for movement based on the major features of theshell 14 itself. Depending on the positioning of the mounting flange andbearing surface, the existing tooling for forming the shell 14 may beincapable of additionally forming the mounting feature, e.g. based oninterferences caused between the mounting feature surfaces and the slidepaths. In conventional tooling systems, an additional slide would berequired to form the mounting feature, which adds complexity to thetooling as well as cost.

FIG. 4 illustrates a process or method 100 of forming a vehiclecomponent according to the present disclosure. FIG. 5 illustrates a toolassembly or a mold 150 for use with the method 100. The sand tool 150are described with respect to forming a shell 14 of an intake manifold12 with an accessory mounting feature 20, although the process and atool to provide similar features may be applied to other vehiclecomponents as described above. The method may include greater or fewersteps than shown, the steps may be rearranged in another order, andvarious steps may be performed serially or simultaneously according tovarious examples of the disclosure.

The mold 150 has a first tool 152 and a second tool 154. The mold 150may have additional dies, slides or other components to form otherregions of the vehicle component 10. The tools and dies 152, 154 may beformed from tool steel or another suitable material for repetitive use.The tools may be provided as die slides such that they assemble and matewith one another to form the tool assembly or mold with surface(s) forforming the vehicle component. Each die may be a cover die or an ejectordie that cooperates with the other dies to form a mold cavity to formthe vehicle component. In one example, the tool assembly or mold isprovided for an injection molding process, for example, of a compositematerial, a polymer material, a thermoset material, a thermoplasticmaterial, and the like.

At step 102, a first tool 152 is formed with a first surface 156, suchas a molding surface. A second tool 154 is formed with a second surface158, such as a molding surface. The first and second surfaces 156, 158cooperate with one another to form a mold cavity when the tool assembly150 is in a closed configuration. The mold cavity is configured to forman accessory mount feature 20 with an aperture 24. The first and secondtool surfaces 156, 158 may additionally be configured to form otherportions of the vehicle component, e.g. portions of the shell 14 of theintake manifold 12.

The first surface 156 is configured to form a lower surface 44 of themount feature 20 surrounding the aperture 24. The second surface 158 isconfigured to form an integrated rib 50 extending outwardly from anupper surface 42 of the mount feature 20 to a planar bearing surface 26surrounding the aperture 24 with the planar bearing surface 26 orientedat an acute angle A relative to the upper surface 42. The lower surface44 is substantially parallel to and spaced apart from the upper surface42.

The second surface 158 may be further configured to form the integratedrib 50 as a tubular structure extending outwardly from the upper surface42 of the mount feature to the planar bearing surface 26. The secondsurface 158 may be further configured to provide the tubular ribstructure 50 with a series of longitudinal secondary ribs 52 extendingoutwardly therefrom. Each secondary rib 52 may extend from the uppersurface 42 to the planar bearing surface 26, and may provide additionalstructural support for the integrated rib 50 and planar bearing surface26, as well as increasing the overall surface area of the planar bearingsurface 26. The series of secondary ribs 52 may include any number ofribs, including one or more, and the number of ribs may be increased toincrease the overall bearing surface area.

At step 104, the first and second tools 152, 154 are provided in a toolassembly 150, and the tool assembly is operated and controlled to form acomponent. At step 106, the first tool 152 is translated along a firstaxis 160 towards the second tool 154. The first axis is substantiallyparallel to the upper surface 42 and the lower surface 44. The firstaxis 160 is oriented at an acute angle A relative to the resultingplanar bearing surface 26. The first axis may be defined for the toolbased on other surfaces of the component or shell, for example, adjacentport or passage 80.

As the first tool 152 is translated along the first axis 160 towards thesecond tool 154 in a first direction 162, a height H of the integratedrib 50 of the resulting mounting feature as measured between the planarbearing surface 26 and the upper surface 42 continually increases in thefirst direction. Likewise, a distance between the planar bearing surface26 and the lower surface 44 increases in the first direction 162.

The mold cavity formed by the first and second surfaces 156, 158 of thefirst and second tools 152, 154 defines the entirety of the accessorymounting feature 20 such that the mounting feature is formed without theuse of a third tool despite the geometry. Therefore, as can be seen fromthe Figures, a conventional tool assembly would be otherwise providedwith a third tool along a third axis 166 in order to form a mounting boxfor the desired bearing surface 26, and to maintain a maximum wallthickness T of the component. For the component 10 shown, the maximumwall thickness T is in the range of 3-4 millimeters, and having thickerregions than this may lead to molding and resulting component issues,for example, porosity issues. In other examples, other maximum wallthicknesses may be provided based on the injected material, toolassembly, and other considerations. The method 100 and tool 150according to the present disclosure allows for the use of existingtooling to provide a mounting feature with the desired positioning forthe bearing surface 26 while maintaining a predetermined maximum wallthickness T for the component.

The second tool 154 is translated along a second axis 166 towards thefirst tool 152, such that the first and second tools 152, 154 convergeto close the tool assembly 150 and form the mold cavity in preparationfor an injection process. The second axis 164 is nonparallel andnonperpendicular to the first axis 160. The second axis 164 isperpendicular to the planar bearing surface 26 according to one example.The first and second tools 152, 154 may be moved simultaneously, or oneafter the other. In further examples, only one of the first and secondtools 152, 154 is moved, and the other remains fixed to a bed of thetool assembly 150.

When the tool assembly 150 is closed, material is injected or otherwiseinto the mold cavity to form the component 10 at step 108. In oneexample, the material includes a polymer material, a plastic material,or the like. In another example, the material is a composite material.The injection process may occur at a high pressure, and the toolassembly 150 may be heated and/or cooled as a part of the process to setthe injected material. The material is injected and flows into the moldcavity of the tool assembly and into contact with the surfaces tools anddies.

After injecting material, the tool assembly 150 remains closed for apredetermined time to allow the formed component 10 to cool within themold. At step 110, the tool assembly 150 is then opened, for example, bytranslating the first tool 152 and second tool 154 away from one anotherby translating the first tool 152 along the first axis 160 andtranslating the second tool 152 along the second axis 164. The component10 may then be ejected or removed from the tool assembly 150. The toolassembly or mold 150 therefore provides a vehicle component 10, such asthe intake manifold 12 of FIG. 1, with a shell 14 and an accessorymounting feature 20 with a plana bearing surface 26 at a predeterminedangle without changing the side areas or adding another slide or tool.

While exemplary embodiments are described above, it is not intended thatthese embodiments describe all possible forms of the disclosure. Rather,the words used in the specification are words of description rather thanlimitation, and it is understood that various changes may be madewithout departing from the spirit and scope of the disclosure.Additionally, the features of various implementing embodiments may becombined to form further embodiments of the invention.

1. A method of forming a vehicle component comprising: forming first andsecond tools with first and second surfaces, respectively; andtranslating the first tool along a first axis towards the second toolsuch that the first and second surfaces cooperate to define a moldcavity configured to form an accessory mount feature with an aperture,the second surface configured to form an integrated rib extendingoutwardly from an upper surface of the mount feature to a planar bearingsurface surrounding the aperture with the planar bearing surfaceoriented at an acute angle relative to the upper surface, wherein thefirst axis is substantially parallel to the upper surface.
 2. The methodof claim 1 wherein the first surface is configured to form a lowersurface of the mount feature surrounding the aperture, the lower surfacesubstantially parallel to and spaced apart from the upper surface. 3.The method of claim 2 wherein a maximum thickness of the accessory mountfeature is four millimeters or less.
 4. The method of claim 1 whereinthe second surface is further configured to form the integrated rib as atubular structure having a series of longitudinal secondary ribsextending outwardly therefrom.
 5. The method of claim 1 furthercomprising translating the second tool along a second axis towards thefirst tool.
 6. The method of claim 5 wherein the second axis isnonparallel and nonperpendicular to the first axis.
 7. The method ofclaim 5 wherein the second axis is perpendicular to the planar bearingsurface.
 8. The method of claim 5 further comprising, after injectingmaterial into the mold cavity, translating the first tool and secondtool away from one another by translating the first tool along the firstaxis and translating the second tool along the second axis.
 9. Themethod of claim 1 further comprising injecting at least one of a polymerand a plastic into the mold cavity to form the component with theaccessory mount feature.
 10. The method of claim 1 further comprisingtranslating the first tool along the first axis away from the secondtool after injecting material into the mold cavity.
 11. The method ofclaim 1 wherein the first tool is translated along the first axistowards the second tool in a first direction; and wherein a height ofthe integrated rib as measured between the planar bearing surface andthe upper surface continually increases in the first direction.
 12. Themethod of claim 1 wherein the mold cavity formed by the first and secondsurfaces of the first and second tools defines the entirety of theaccessory mounting feature such that the mounting feature is formedwithout use of a third tool.
 13. (canceled)
 14. (canceled) 15.(canceled)
 16. A mold comprising: a first tool configured to translatealong a first axis and defining a first surface; and a second tooldefining a second surface, the first and second surfaces defining a moldcavity configured to form a mount feature on a vehicle component, thesecond surface configured to form a planar bearing surface surroundingan aperture of the feature, the first axis oriented at an acute anglerelative to the planar bearing surface.
 17. The mold of claim 16 whereinthe first tool is configured to translate towards the second tool alongthe first axis in a first direction; and wherein the first surface isconfigured to form a lower surface of the feature surrounding theaperture, wherein a distance between the planar bearing surface and thelower surface increases in the first direction.
 18. The mold of claim 17wherein the second tool is configured to translate along a second axis,the second axis being perpendicular to the planar bearing surface, thefirst and second axes being nonparallel and nonperpendicular to oneanother.
 19. The mold of claim 17 wherein the second surface isconfigured to form a tubular rib extending outwardly from an uppersurface of the mount feature to the planar bearing surface, wherein theupper and lower surfaces and the first axis are substantially parallelto one another; and wherein the second surface is further configured toform a series of longitudinal secondary ribs extending outwardly fromthe tubular rib, each secondary rib extending from the upper surface tothe planar bearing surface.
 20. (canceled)
 21. The method of claim 8further comprising providing the mold cavity shaped to form at least aportion of an intake manifold as the vehicle component, the mold cavityshaped to form the intake manifold with a shell structure, the accessorymount feature and the integrated rib extending outwardly from the shell.22. The method of claim 21 wherein the first surface of the first toolis further shaped to form a lower surface of the accessory mountfeature, the lower surface surrounding the aperture, the lower surfacesubstantially parallel to and spaced apart from the upper surface suchthat the accessory mount feature is formed as a plate extendingoutwardly from the shell structure; and wherein the second surface isfurther shaped to form the integrated rib as a tubular structuresurrounding the aperture and with a series of longitudinal secondaryribs extending outwardly from the tubular structure, each secondary ribextending substantially parallel to the second axis, each secondary ribextending from the upper surface to the planar bearing surface.
 23. Themethod of claim 1 further comprising connecting a clip fastener for awire harness, the clip fastener having a post extending into theaperture and a head in contact with the planar bearing surface.
 24. Themethod of claim 23 further comprising connecting the wire harness to theclip fastener such that the mounting feature and the clip fastenercooperate to position the wire harness to extend in parallel above theplanar bearing surface.